1047106505 has 4 divisors (see below), whose sum is σ = 1256527812. Its totient is φ = 837685200.

The previous prime is 1047106469. The next prime is 1047106513. The reversal of 1047106505 is 5056017401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5056017401 = 19 ⋅266106179.

It can be written as a sum of positive squares in 2 ways, for example, as 825930121 + 221176384 = 28739^2 + 14872^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1047106505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104710646 + ... + 104710655.

It is an arithmetic number, because the mean of its divisors is an integer number (314131953).

Almost surely, 2^1047106505 is an apocalyptic number.

It is an amenable number.

1047106505 is a deficient number, since it is larger than the sum of its proper divisors (209421307).

1047106505 is an equidigital number, since it uses as much as digits as its factorization.

1047106505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209421306.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 1047106505 is about 32359.0250934728. The cubic root of 1047106505 is about 1015.4618668540.

The spelling of 1047106505 in words is "one billion, forty-seven million, one hundred six thousand, five hundred five".